Radiator



April 10, 1928, 1,665,385

w. a. WALLACE RADIATOR Filed Sept. 8. 1924 Nmm Patented Apr. was.

wIIlLIAM e, WALLACE, or nn'r norr,

irionreamlass'mnon ro'iiiiccofan RADIATOR a MFG; 00., on DETROIT, IMIGHIGAN, A CORPORATION 013 Ma ne. V V

' I nanmipoai V IAp-I'mamnfiid ptember 3,1924. swam. 73639;; f

invention relates to radiators for" antomob'iles [and other motor vehicles; and has particular reference to'themanner ofat t chin'g the tube sheets to the tanks. j I I 5 Themain'object of my invention to provide a connection "between the" tank body" and its "tube's'heet utilizing the resiliency of the parts for holding the being assembled, thereby the sheet metal of same together on in avoiding crimping or bending :of' flanges over each other ashereto'fore and thus make my invention "applicable to "radiators with cu'rved or roundedfronts. I

i The inventlonconsists further matters hereinafter described and more particu larly set forth 'inthe following claims. jI In theacc'om'panying] drawings5-f Fig. '1 is 'a front viewofa radiator embodyingthe 'featuresjof my invention} j View taken on' line2-2 0f 1';" I

"Figs 3 and 4; are transVerSe 'and longi- .tudinal sectional views, respectively, taken on lines 3- 3 and of Fig. 2; v

I Figs. 5 and 6 are fragmentary perspective views of the tank and tube sheet, respectively.;;and

' Fig. broken away, of the bottom'tanklooking at the same from its underside. I I I Fig. 1 hows a radiator for a motor vehicle having an outer shell or casing 1, and

a core 2, as usual in structures of thiskind.

The core 2 isbetween upper and lower water tanks 3, 4, and consists of horizontal plates or fin strips 5, 5, through which extend vertical water tubes 6, 6. Each tank has a tube sheet 7 with Openings 8 for the tubes or conduits 6 to extend through, as shown.

In the drawings, I have detailed the connection of the tube sheet 7 with the lower tank 4, but it is. to be understood that. the same showing would. apply to the upper tank 3, except that the tank is above the tube sheet instead of below it, as in Figs. 2 .7

As illustrated, vthe lower tank 4 has abody portion having a. flat bottom wall 9, and upright rear, end and front walls 10, 11, and 12, respectively. The rear and end walls are substantially flat and straight, while the front wall 12 is curved from one end of the tank'to the other with the highest point or crown of the curvature at the center of the I'Fig. 2 'is an enlargedhorizontal sectional 7 is a. perspective view, partially tank, as shown in 2"'-and7'; 1 There ar wall 1Q has-a rearwardly extending horizon-, I

t-al 'lflange la-faiongm "upper edgefl Thi'si flange extends from endto endiof'fsaid'wall. I

end and frontwall'sll and 12 arena- I T e. an ed Fasj ow I K rniingthe top Wall of tlietank 4:- is-the substantially fiat tube sheefi-"Y; A This incini bier has; shape to the taper the tank,

andhas along its straight'rear edge an in turned "flange' MJ fThis flange forms achan-p n 'elto receive the; flange 1 3 QIi tliQ rear tank wall '10, as'shown'in Fig1f3. I About the straight en'd and curvedfront edges of the tube sheet is I a. continuous and unbroken downwardly extending marginal fiange lfi designed to slip over'the end and frontt-ank' walls 11 and 12 0;; the outside,

as shown.

showiiiri Fig. the front wan 12fof 1 h an; i' ciir ed, up ard an ou r rom the bottomfwall 9, By sofcurving the front walllQ, the uppejr edge of saidw'all makes theltankjnormallywider than the tube sheet 711 fWhen these parts are first applied with theflange 13'interlocked with the'fiange 14,

- the upp er'edgeof. said front wall stands just beyondithe flange 15 on the curved front edge of thetube-she'etlfl See dotted lines in 2 and 'Prefssingin on the front wall 12,-sa'id wall is sprung or "flexed inward to slip under the flange 15. At the same time the tube'sheet and the tank are pressed together,and by the resilient tendency of the front wall12 to spring-outward the parts are held tightly together on being assembled.

To provide-for this resiliency, the curvature'bet ween the bottom wall 9 and the front wall 12 increases toward the center of the tank from near itsends. Thisis shown in Fig. 7. This curvatureis providedon die pressing the tank out of sheet metal, such v as brass The tube sheet 7 is also pressed to shape out of the same metal.

The connection described'utilizes the re-' 10o siliency of the sheetmetal for holding the parts togetheron being assembled, and thus avoids the necessity of crimping the edges of the tube sheet around flanges on the tank, as heretofore with rectangular tanks- This ,105 makesmy invention particularly applicable to curved edges, where such crimping could not be employed without checking or wrinkling the metal in the process of making my invention is especially fitted to radiators 1 with rounded frontsgi at it enables we:

tight joints to be formed about the rounded d esp th v as s of S h a a s y soldering after thetanksand tube sheetsare applied together} I claim as rny inyentiofpz,

The details of structure shown and d e scribed may be variously changed'and modi qfied Without departing vfrom the spirit'and i i l i V i scope of my invention].

, 1 A tank fonnse in a;. .moto ljive liicle t0!) core havingv a convex front, said tarik comp i z b yen eti be h ewdverma we ter; b th .ebe n st m ed z l-t'vm. 1 a shee ;metal, said tank body and tubel sheet having theiiyfront 'edges curved to conformto the ur ature Q emes t em Qffih said tank bodyandtube'sheethavinginteie:

a tube sheet .haj'ving a flange 0111. its 'cur e'al locking fl ng s ,ontheir man, edges; Ysaiifd m'n' dge o verlap the ui v Y fibi f all of the tank" body an e ns d thereof, e

on ell of the me b dy b n spru bas :et e t b shet i i li e e the sanievfoifholding the togetliel' on "being-asse bled. V a

2. I A'tank 01; use in a motoi: vehicle radial for care, having a emivex front, said tank comprising a body and a tnbe sheetfcfovermg m mm t i esmm dt l fi Sheet 7' m t l, saidt'ankbody and tube sheet having their front edges enrved to eqnformgto the curvature 0f the oonve 'z' ffroiitof the co lie} saidf-flhkbody and tube sheet interlockingflanges 'Ontlieir ear dggs; said tube V sheet having. a, marginal 'flang [albng front -and w en e e i d to e er en th 'f i e ell he ek dy on the outside thereof, said tanl tflbody (at the tube heet being made sj i wid'r edges and a -ciil v'ejcl or 1'6 ded I c y latter conforminfigto the' ouz va re of t thanthe. tube sheet and havingitsf ont wall 1 curved back thepefroin so that said front Wall must be sprung back to engage behlnd body and tube sheet togethel" oi' beinkas said tube sheet flange for holding thetank selnbled. v 7 V 3. A tube sheet for a tank of a motor veh'ic'le radiator core having a convex front,

saidtnbe sheet comprising a relatively fiat .body portion stamped from sheet metal and having holes therein for :the, Water conduits bod omen ha vin fie de e Qit' g e d e to p eyidaw' acin .an el, and aifl ng 611 ts vedtfr'ii' 4,. y ,tiibe, hide radiatorhcdi'ehavingl co" 0 said tube sheet compli'ising; a 1 relat ve body portion, stamped, froi'nfsheet' nfiiet having. substantially re convex front of thecofre'; s'fidi 'p'b ion having holes therein to receive; 1 e He;

conduits o'f the co're a gels-q flanges about its edges; the flange ontlie reai edg "jigs folded toprovide an inwardly facing am e H e 61 and the flange abqutwthefj er edges being at substantially right es to the A Winn-1AM 

